Smithfield NC Heating & Air Conditioning Services

Tech repaired leak, replaced filter drier, pressure tested, pulled a vacuum and recharged system. System is now cooling properly. Tech was told by office not to replace condensate pump.

Tech found the carrier unit controls the offices and is controlled by thermostat labeled lobby. Maintenance supervisors office was 80 but sensor is located by the HUB and is temperature being influenced by the HUB thermostat causing that unit to only run 1st stage or not run at all due to being satisfied. 6 degree temperature difference between maintenance office and sensor. Maintenance office is close to the area controlled by the kitchen unit, kitchen unit is down due to low refrigerant. Tech found standing pressure only at 68 psi 410a with 79 degree ambient. Tech found oil and liquid line rubbing against discharge and was able to pinpoint the leak. Once leak is repaired, room temperature difference should level out.

Performed CMA Full Service 1st Visit on 5 Rooftop package Units, 3 Split Heat Pump Systems and 1 Mini Split. Challenge - RTU - Kitchen 1 - Carrier - upon arrival the system was not operating. Technician replaced the condenser fan motor and was able to get the system up and running. Shortly after, the maintenance staff informed the tech that the system stopped working again. Technician inspected the system and found the blower belt was severely loose. The result was that the system would intermittently switch between circuit 1 and 2, and not efficiently cool the space. Technician tightened down the belt and restored power. Tech was then informed that the system was cooling once again. While finishing up the entire job, the tech was informed again that the system was not cooling. Tech recommends a demand tech to further diagnose challenges with this system. Challenge - Mini Split - Therapy - the condensate pump needs to be replaced. One currently attached to the system is only interm

Tech washed and serviced unit and found no challenges at this time (unit is 6 months old). There were no recommendations at this time. Unit is up and cooling with a delta t of 25.

Upon arrival customer stated, all 5 units are currently down. Tech found carrier unit for main office compressor #1 cut out on High head pressure due to failed condenser fan motor. Other 3 system need condenser coils cleaned. The last system that faces the road has a blower belt snapped in half, customer has a blower belt for the unit. Tech charged for installation of customer supplied blower belt, that system is back up and cooling. All 5 systems need to be labeled tomorrow morning as well as outdoor fan replacement when CMA scheduled. Customer has to leave, so CMA will need to make repairs. 3 systems are currently down until coil are cleaned.

Performed CMA Full Service on 1 Rooftop Package Unit. No challenges present during today’s visit. The system is cooling properly and holding a delta t of 20 degrees.

Upon arrival customer stated ducts were sweating. After further inspection tech found air vent located right next to fan/hood was sweating not actual duct work. Exhaust fan is pulling coil air across fan/hood cause it to sweat. No issues at todays visit.

Tech found solenoids were opening properly on both circuits. Circuit 1 is shutting down within secs of operating. Tech measured temp difference on the solenoid no temp drop tech found extreme tech deference on the fixed orfice as if restricted. Tech suspected fixed orfice is restricted and causing circuit 1 to shut down tech by passed and is only allowing circuit 2 to run system is cooling at 50 percent capacity.

Techs replaced both cooling solenoid valves, system continued to run high pressure before it shuts down. Discharge solenoid valves are not receiving 24 volts. Techs suspect discharge solenoid valves are malfunctioning and will have to return to further diagnose the system as per office instructions.

Tech preformed CMA FULL SERVICE on 1 Mini Split System. System is operating within specifications at this time and dispensing 49 degree air. Tech removed blower wheel and drain pan and cleaned, then reinstalled. Condensate pump is operating at this time with no clogged. Tech has attached SYSTEM PERFORMANCE REPORT to invoice along with pictures.

Tech performed esa on trane package unit, found no challenges at todays visit.

-Arrived to find thermostat calling for cooling and not satisfied. Found outdoor fan motor turning slowly and compressor not operating. -Found dual run capacitor heavily swollen. -Made needed repairs.

GPHH33041A

Upon arrival tech was informed system #22 was blowing air but it was not cold. Tech inspected system and found 40/5 mfd dual run capacitor failed. Replaced with new capacitor and condenser started up. Pressures and temperatures were within range. System is back operational at this time.

Tech was getting superheat fluctuations between 4-8 within secs of operating. Tech spoke with office and was instructed to removed refrigerant and pull vacuum. Tech pulled vacuum down to 340 microns added 6lbs 6oz. Once started up pressures were within specs and superheat was 2.7 for this system it’s within specs tech had a 17 degree delta t. Duct work looked intact. Good airflow in vents. Tech informed customer to monitor system for a few days.

Upon arrival customer stated 3 systems that cool the back area of office weren’t cooling. Tech informed customer that previous estimates need to be approved in order to get systems back up and cooling or a field supervisor will need to get in contact. Customer also stated the 2nd system on the side of building wasn't keeping up, tech found pressures extremely low. Customer just wants a quote on replacing that one as well. Tech recommended replacing 4 systems due to age and cost of repair, approved of field supervisor getting in contact. Also units are flood units, field supervisor will be in contact shortly.

Replacement of condenser fan motor on system - 0707U03975 once replace system is operating properly at this time. Tech was informed another system condenser fan motor was spinning backwards. Tech found common side for 30 amp capacitor was burnt up and the od fan motor was jumped off that common as well tech replaced aced 30 amp capacitor with approval .tested the 50 mfd and the 7.5 mfd all within specs. Tech ran new common wire off the contactor to the 7.5mfd. System is operating properly at this time

Found the system operating with a high superheat of 33 and low subcool of 1.2. Delta T of only 10 degrees. Indoor and outdoor pistons. Temperature across Filter dryer is normal. Tech added 1lbs of R410a for testing purposes and decreased the airflow from speed tap #5(high static cooling) to #2(normal cooling). Evaporator coil is clean and return line appears to be good, filter is not clogged, all air vents have airflow, heat strips are not engaging. Tech managed to acquire a 14degree delta T after adjustments but bounces from 12 to 14 degrees. Reversing valve is switching over properly as well. 2nd option is required, pistons may not be sliding to properly meter. Office is aware of findings.

Tech found unit 2 circuit a was tripped alarm low superheat tech cleared code and monitored pressures circuit a 103/339 sh was 8 circuit b was 116/367 sh 26. Unit 1 circuit a is operating properly. Circuit b compressor sounds louder then normal pressure were 146/389. A few minutes later another company came with maintenance personnel and maintenance informed technician that they will keep in touch with Jackson’s and inform us on other company findings. Piedmont heating and air.

-Arrived to find outdoor unit not operating when called for at thermostat. Found air handler secondary float switch triggered in crawl space. Cleared drain line with compressed nitrogen, brushed condensate trap, and flushed line with algae tabs dissolved in water. -System currently operating. Return temperature of 79 supply of 58. This temperature difference is slightly high. System may need follow up to further monitor refrigerant pressures with reasonable indoor temperature. -System was recommended for UV lamp replacement. A working UV lamp will help to prevent algae buildup on coil and clogs in condensate drain. -No service fee per maintenance plan.

Tech found computer room mini split low on refrigerant and found evaporator coil leaking. Tech recommends replacing unit due to price of coil replacement. Tech also quoted pulling a vacuum and recharging factory charge. Tech found mechanical room Mitsubishi thermostat blank. Tech replaced batteries and found thermostat lit up but would not respond to adjustments. Tech quoted thermostat replacement. Tech found 4 floor 4 head mini split completely out of refrigerant. Tech found suction flare but has a large leak but also recommends searching all 4 heads. Tech quoted leak search, recharge and repair, but recommends looking into replacement as well due to price of repair. System holds 18 lbs plus 5 additional pounds for lineset length. Tech pulled a vacuum and recharged computer room with factory charge per customer request. Unable to pull to 500 microns since system has a leak. Tech explained there is no guarantee on how long the recharge will last. Computer room is up and run

Updated proposal to replace upstairs system.

-Tenant stated system not cooling to satisfaction. Found thermostat set to 73 upon arrival. Found return temperature of 72 at air filter and 74 at outside duct hood. Found supply temperature of 58 at supply duct and 57 at outside duct hood. Air flow and air filter in good condition. -Observed high pressure of 380, low pressure 139. Suspect restriction in refrigerant. Unplugged reversing valve in attempt to loosen piston metering device. Pressures dropped to 347 & 120 upon reconnecting. -Found temperature difference of 5 degrees across filter drier. Suspect drier causing restriction. Recommend evacuate refrigerant, purge lines with nitrogen, replace filter drier, recharge system.

SANCTUARY- 5 TON DAIKIN CONDENSING UNIT & (2) COILS

Upon arrival tech found failed dual run capacitor, replaced capacitor after approval and tested system. Compressor and fan amp draws are within spec. System is back up and cooling. Customer invested in monthly service agreement. Customer stated they will have to update card info as current card is expiring this month.